ADHD Assessment - Why it's Important to Get a Private ADHD Diagnosis Anyone who believes they may be suffering from ADHD but has not been diagnosed should get an ADHD assessment. The process can take up to two hours, and it's recommended to bring a family member or acquaintance along. https://ukpsychiatrist70265.worldblogged.com/35650381/10-things-we-do-not-like-about-adhd-diagnosis-uk-private